Home / 86,206,918.80-129,310,378.20-76,853,557.20

Finding the Fourth Proportional to 86,206,918.80, 129,310,378.20 and 76,853,557.20

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Solution

The fourth proportional to 86,206,918.80, 129,310,378.20 and 76,853,557.20 is: 115,280,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206,918.80 : 129,310,378.20 = 76,853,557.20 : x
  2. Step 2: Convert to fraction form
    86,206,918.80/129,310,378.20 = 76,853,557.20/x
  3. Step 3: Cross multiply
    86,206,918.80x = 129,310,378.20 × 76,853,557.20
  4. Step 4: Simplify right side
    86,206,918.80x = 9,937,962,547,547,334
  5. Step 5: Solve for x
    x = 9,937,962,547,547,334/86,206,918.80
  6. Step 6: Final answer
    x = 115,280,335.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.